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The Philippine Scientist最新文献

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Anchialine crustaceans (Crustacea: Decapoda) from Siquijor Island, Philippines 菲律宾锡基霍尔岛甲壳纲动物(甲壳纲:十足纲)
The Philippine Scientist Pub Date : 2014-04-29 DOI: 10.3860/PSCI.V50I0.3245
Abner A. Bucol, M. Alcala
{"title":"Anchialine crustaceans (Crustacea: Decapoda) from Siquijor Island, Philippines","authors":"Abner A. Bucol, M. Alcala","doi":"10.3860/PSCI.V50I0.3245","DOIUrl":"https://doi.org/10.3860/PSCI.V50I0.3245","url":null,"abstract":"Crustaceans occurring in the anchialine ponds of Siquijor Island are reported for the first time. The crustacean fauna in anchialine habitats consist of two species of shrimps and four species of crabs. Physico-chemical parameters measured in situ during the survey show typical characteristics of tropical anchialine habitats, i.e., subsurface temperatures ranged from 25°C to 29.6°C (mean ± standard deviation, throughout = 28.26 ± 1.87°C); pH of about 7.0; low dissolved oxygen (DO) level from 4.5 mg/L to 6.63 mg/L (5.93 ± 0.87 mg/L); and higher salinity in an open anchialine pool (21.7‰, Cambakjaw) than in anchialine caves, from 5.5‰ to 13.3‰ (12.18 ± 6.21‰). Degradation of anchialine habitats were observed as a result of agriculture run-off, human utilization (e.g., bathing and laundry) and, in one case, introduction of Tilapia Oreochromis niloticus.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126508000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acute toxicity tests of Lannate insecticide on three commercially important fingerlings of the Visayas region, central Philippines 兰酸酯杀虫剂对菲律宾中部维萨亚斯地区三种重要商业鱼种的急性毒性试验
The Philippine Scientist Pub Date : 2014-04-29 DOI: 10.3860/PSCI.V50I0.3246
Adriano R. Melendres, D. Dy
{"title":"Acute toxicity tests of Lannate insecticide on three commercially important fingerlings of the Visayas region, central Philippines","authors":"Adriano R. Melendres, D. Dy","doi":"10.3860/PSCI.V50I0.3246","DOIUrl":"https://doi.org/10.3860/PSCI.V50I0.3246","url":null,"abstract":"The study examines the acute toxicity (48 h) of Lannate insecticide to three species of fish fingerling with different osmoregulatory capabilities, i.e., Oreochromis sp. (GET-Excel tilapia), Lates calcarifer (seabass), and Siganus fuscescens (rabbitfish). After 2 weeks acclimatization period in the laboratory, static bioassays were conducted to determine the median lethal concentration (LC 50 ). Three acute toxicity trials were conducted to determine mortality and observations were done at 3, 6, 12, 24, and 48 h. After 48 h, the mean LC 50 values were 7.73 ppm for GET-Excel Tilapia, 6.11 ppm for Lates calcarifer , and 1.47 ppm for Siganus fuscescens . Immediate changes in breathing rate were also observed upon introduction of Lannate into the medium, with Siganus fuscescens having the highest average breathing rate (74/min). Mortality increased with Lannate concentrations with Siganus fuscescens determined to be most sensitive to Lannate among the three species. Recent use of Lannate insecticide in killing nearshore fishes and the result of this study should serve as a wake-up call to regulate usage of this insecticide at the barangay level, i.e., the smallest administrative unit in the Philippines.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"31 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114060229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Aquatic Coleoptera of the Lake Manguao Catchment, Palawan, the Philippines 菲律宾巴拉望岛曼果湖集水区水生鞘翅目
The Philippine Scientist Pub Date : 2014-04-28 DOI: 10.3860/PSCI.V50I0.3243
H. Freitag, H. Zettel
{"title":"Aquatic Coleoptera of the Lake Manguao Catchment, Palawan, the Philippines","authors":"H. Freitag, H. Zettel","doi":"10.3860/PSCI.V50I0.3243","DOIUrl":"https://doi.org/10.3860/PSCI.V50I0.3243","url":null,"abstract":"Results of an inventory of the aquatic and paraaquatic beetle fauna (Insecta: Coleoptera) of small streams in a lake catchment of northern Palawan are presented. Thirty-two sample sites and the sampling methods used are described herein. A total of 56 species taxa were recorded, with the majority of the collected material determined to species level. References and information on ecology, distribution and collection sites are given for each identified taxon. Some taxa are recorded for the first time in the Philippines, and endemic and undescribed taxa are discussed. Additional environmental data of the sampled aquatic and the surrounding terrestrial habitats are provided and discussed in comparison with data of previous surveys in the area.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122904002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Human disturbance in a tropical rocky shore reduces species diversity 热带岩岸的人为干扰减少了物种多样性
The Philippine Scientist Pub Date : 2014-04-28 DOI: 10.3860/PSCI.V50I0.3244
K. Deepananda, E. Macusi
{"title":"Human disturbance in a tropical rocky shore reduces species diversity","authors":"K. Deepananda, E. Macusi","doi":"10.3860/PSCI.V50I0.3244","DOIUrl":"https://doi.org/10.3860/PSCI.V50I0.3244","url":null,"abstract":"Human activities in coastal areas may threaten biological communities and lead to the loss of biodiversity. This study compares the impact of human trampling on macrobenthic communities found in the low-, mid-, and high-tidal zones of the Rumassala Marine Sanctuary and two adjacent localities, Galle and Unawatuna. We used univariate measures, species area curves, and diversity indices to discriminate the impact of human activity on the rocky shore community assemblages. Results from index of disturbance of macrofauna and macroflora in more frequently visited sites like Galle and Unawatuna indicate that human presence tends to negatively affect the benthic assemblages; in contrast, human disturbance has a lower influence in Rumassala. There were more macrobenthic species in Rumassala (81) than in Galle (59) or Unawatuna (52), and Margalef’s and Shannon’s diversity indices, respectively, indicate the same trend, i.e., Rumassala (9.42, 3.17), Galle (7.21, 3.13), and Unawatuna (6.74, 2.90).","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134007779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Aquatic Coleoptera and Heteroptera of the Lake Naujan National Park, Oriental Mindoro, the Philippines 菲律宾东方民都洛岛诺扬湖国家公园水生鞘翅目和异翅目
The Philippine Scientist Pub Date : 2012-01-22 DOI: 10.3860/PSCI.V47I0.2424
H. Freitag, C. Pangantihon
{"title":"Aquatic Coleoptera and Heteroptera of the Lake Naujan National Park, Oriental Mindoro, the Philippines","authors":"H. Freitag, C. Pangantihon","doi":"10.3860/PSCI.V47I0.2424","DOIUrl":"https://doi.org/10.3860/PSCI.V47I0.2424","url":null,"abstract":"This study presents results of faunistic surveys at Lake Naujan and two of its tributaries, Oriental Mindoro. These activities were part of the rapid ecological assessments conducted by the graduate students of the Biology Department of De La Salle University-Manila on February 22–23, 2010. The sampling sites examined are briefly described. Records of 49 Coleoptera and 12 Heteroptera species are listed, including 13 endemic taxa and five new records for the Philippines. All species, but in particular those with interest for conservation and new records from Mindoro or the Philippines are discussed.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124375851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Initial Development of Marine Assemblages on Woody and Plastic (Polypropylene) Substrata 木质和塑料(聚丙烯)基材上海洋组合的初步发展
The Philippine Scientist Pub Date : 2010-01-11 DOI: 10.3860/PSCI.V46I0.1451
Louie L Olalia, Hernan S Urpiana, D. Dy
{"title":"Initial Development of Marine Assemblages on Woody and Plastic (Polypropylene) Substrata","authors":"Louie L Olalia, Hernan S Urpiana, D. Dy","doi":"10.3860/PSCI.V46I0.1451","DOIUrl":"https://doi.org/10.3860/PSCI.V46I0.1451","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116259071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Composition, Abundance and Distribution of Rotifers in the Pasig River, Philippines 菲律宾帕西格河轮虫的组成、丰度和分布
The Philippine Scientist Pub Date : 2010-01-11 DOI: 10.3860/PSCI.V46I0.1452
M. Andrea, V. A. Lazo, Kristine Kamille, P. Nieto, Felma S. Rayel, M. Andrea, M. Vergara, R. Donne, S. Papa
{"title":"Composition, Abundance and Distribution of Rotifers in the Pasig River, Philippines","authors":"M. Andrea, V. A. Lazo, Kristine Kamille, P. Nieto, Felma S. Rayel, M. Andrea, M. Vergara, R. Donne, S. Papa","doi":"10.3860/PSCI.V46I0.1452","DOIUrl":"https://doi.org/10.3860/PSCI.V46I0.1452","url":null,"abstract":"Pasig River is situated in the highly urbanized area of Metropolitan Manila. Rotifer composition, abundance and distribution were observed by analyzing plankton samples from five sites along the Pasig River from June to September 2007. Physical-chemical parameters were also measured for each sampling site. Thirty rotifer species had been identified and monthly differences in species number, abundance, temperature, and salinity have been observed. Variations in Shannon-Wiener diversity as well as dissolved oxygen (DO), temperature, Secchi Disc transparency and salinity were not noted between sampling sites. Lowest densities (54.55 indv/m 3 ) and DO values (range: 0-5.18 ppm) were seen in the area near the mouth of the San Juan River while highest density was noted in the vicinity of the Napindan Bridge near Laguna de Bay (259.94 indv/m 3 ). Changes in the number of rotifer species and abundance per month were related to the levels of dissolved oxygen, temperature and salinity. Pollution-tolerant and indicator species such as those from the genus Brachionus, Keratella, and Filinia were among the most common and abundant rotifers observed validating the eutrophic state of the river and its headwater.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114727445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The Use of Wood Fuel for Cooking Among Urban Households in Cebu City 宿务市城市家庭使用木材燃料做饭
The Philippine Scientist Pub Date : 2010-01-11 DOI: 10.3860/PSCI.V46I0.1455
Francisco M. Largo
{"title":"The Use of Wood Fuel for Cooking Among Urban Households in Cebu City","authors":"Francisco M. Largo","doi":"10.3860/PSCI.V46I0.1455","DOIUrl":"https://doi.org/10.3860/PSCI.V46I0.1455","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115159365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antimicrobial Triterpenes from Dillenia philippinensis 菲律宾水蛭抗菌三萜
The Philippine Scientist Pub Date : 2010-01-11 DOI: 10.3860/PSCI.V46I0.1454
C. Ragasa, Agnes B. Alimboyoguen, Chien-Chang Shen
{"title":"Antimicrobial Triterpenes from Dillenia philippinensis","authors":"C. Ragasa, Agnes B. Alimboyoguen, Chien-Chang Shen","doi":"10.3860/PSCI.V46I0.1454","DOIUrl":"https://doi.org/10.3860/PSCI.V46I0.1454","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115376244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Removal of Manganese from Natural and Seawater using Magnesium oxide 用氧化镁去除天然和海水中的锰
The Philippine Scientist Pub Date : 2010-01-11 DOI: 10.3860/PSCI.V46I0.1453
S. Asaoka, K. Fujii, J. Kawaguchi, M. Aono
{"title":"Removal of Manganese from Natural and Seawater using Magnesium oxide","authors":"S. Asaoka, K. Fujii, J. Kawaguchi, M. Aono","doi":"10.3860/PSCI.V46I0.1453","DOIUrl":"https://doi.org/10.3860/PSCI.V46I0.1453","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130192169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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